Lamp-chimney protector.



No. 709,393. Patented Sept. l6; I902. w. asunnuss. I

LAMP CHIMNEY PROTECTOR.

Application fild June 5, 1901.1

@No Model.)

ozzxpma UNITED STATES ATENT UFFICE.

WILLIAM CICERO BURRUSS, OF NORFOLK, VIRGINIA.

LAM P-CHIMNEY PROTECTOR.

SPECIFICATION forming part of Letters Patent No. 709,393, datedSeptember 16, 1902.

Application filed June 5, 1901- Serial No. 63,297. (No model.)

.atNorfolk, in the county of Norfolk and State of Virginia, haveinvented certain new and useful Improvements in Lamp-Chimney Protectors,of which the following is a speci iicaiion.

This invention relates to improvements in lamp-chimney protectors.

The object ofthe present invention is the provision of a protectoroftheclass described, whereby liability of cracking and breakage oflamp-chimneys incident to excessive high temperature is reduced to aminimum.

A further object of the invention is to provide a chimney-protectorconstructed in such manner as to be capable of use with chimneys ofvarious sizes without the necessity of altering the shape or dimensionsof the protector.

With these general objects in view and others which will appear as thenature of the improvements is better understood, the invention consists,substantially, in the novel construction, combination, and arrangementof parts, as will be hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the appended claims.

In the drawings, Figure 1 is a side elevation of achimneyl-protectorconstructed iuaccordance with the present invention and illustrated inapplied position, the chimney being shown in dotted lines. Fig. 2 is atransverse sectional view thereof. Fig. 3 is a top plan View of theprotector. Fig. 4 is'an inverted plan View thereof.

Referring to the drawings, the numeral 1 designates anannular plate,which plate is provided with a flared rim 2,'and depending from thecentral portion of the plate 1 is a hollow conical projection 3. The rim2 at its inner edge is provided with a series of apertures 4, audit willalso be observed that the projection 3 is likewise provided throughoutits entire length and area with a series of apertures 5. Theprojection3, however, is crimped or corrugated throughout its entire length, sothat aseries of grooves 6 are formed in its outer surface, andsaid'grooves converge from the upper end to the lower end, so that thesame meet at a common center. It will thus be seen that when theprotector is in applied position, the conical projection 3 entering thelamp-chimney, the rising currents of heat are thrown out against the topof the chimney, thus keeping the same at a more nearly uniformtemperature throughout its length, and thereby preventing cracking dueto unequal expansion. The crimped or corrugated surface of theprojection 3 provides a large surface for the absorption of the heat;but by reason of the projection being hollow and perforated the risingcurrents pass through the perforations thereof.

The rim 2 is provided with a series of concentric grooves 7, whichgrooves extend from the inner edge of said rim to its outer edge, and byreason of the same a single protector is applicable to various sizes ofchimneys, each groove being spaced a sufficient distance from thecontiguous grooves to correspond with the various sizes of the chimneys.

In applying the herein-described protector the same is placed in theupper end of a chimney, the groove in the rim 2, corresponding to thesize of the chimney, receiving the upper edge of the latter. As thecurrents of heat ascend the same are concentrated at the lower end ofthe projection 3, whence they pass into the grooves 6 and issue throughthe perforations 4 and 5. As the currents pass through the perforations4 and 5 and into the atmosphere this form of device forms an obstructionto the heat-currents and causes them to take a different direction withrelation to the chimney than they otherwise would and the chimney iskept at a more uniform temper ature throughout its length. The chimneyis notliable to cracking and breakage incident to the excessive hightemperature created by the flame. The device described also aidscombustion and does away entirely with all smell or odor which usuallyarises from an oillamp.

WVhile the form of the invention herein shown and described is what isbelieved to be apreferable embodiment thereof, it will be understoodthat the same is susceptible of various changes in the form, proportion,and

minor details of construction, and the right is therefore reserved tomodify or vary the invention as falls within the spirit and scopethereof.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is

1. A lamp-chimney protector provided with a hollow conical perforateprojection adapted to lie in the path of the rising heat-currents, and asupporting-rim carried by said projection for maintaining theprotectorin applied position, said rim being provided with a series ofconcentric grooves to adapt the protector for application to chimneys ofvarying sizes.

2. A lamp-chimney protector provided with a hollow conical perforateprojection adapted to lie in the path of the rising heat-currents, saidprojection being corrugated to form a series of converging grooves onits exterior surface, and a supporting-rim carried by said projectionfor maintaining the protector in applied position, said rim beingprovided with means to adapt the protector for application to chimneysof various sizes.

3. Alamp chimneyprotector provided with a hollow conical perforateprojection adapted to lie in the path of the rising heat-currents, saidprojection being corrugated to form a series of converging grooves onits exterior surface, and a supporting-rim carried by said projectionfor maintaining the protector in applied position, said rim beingprovided with a series of concentric grooves to adapt the protector forapplication to chimneys of various sizes.

4. A lamp-chimney protector comprising a hollow perforatedeXteriorly-corrugated inverted conical body having a support and adaptedto be arranged in position within the upper end of the chimney.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM OICERO BURRUSS.

Witnesses:

HOWARD SHEILD, GEo. M. WONYCOTT,

